JAVA - 无法编译

Question

我的驱动程序类无法编译。它一直说我给出了错误的类型。我已经在 Phone 类中声明了变量，然后在驱动程序中创建了有关手机的信息，并希望将其存储在数组中。

电话类

public class Phone extends Technology {
    private String name;
    private String type;
    private String colour;
    private int inStock=10;
    private int sold;

    //Constructor
    public Phone (String itemsId,  String brand, double price, String name, String type, String colour ) {

        super(itemsId, brand, price );
        this.name = name;
        this.type = type;
        this.colour = colour;
    }   
}

这是驱动程序类中无法编译的部分，我无法弄清楚我做错了什么。我按照电话类中的顺序创建了有关电话的信息。

// Creating 10 phones and storing in arrayList
public void pickPhone(){

    Phone phone = new Phone("A223","Apple", "€679.00 ", "iPhone 5s", "Smartphone ", " Black");
    phoneList.add(phone);

    phone = new Phone("A252","Apple", " €649.00 ", " iPhone 5s", "Smartphone ", " White");
    phoneList.add(phone);

    phone = new Phone("A264","Apple", " €329.00 ", " iPhone 4s", "Smartphone ", " Black");
    phoneList.add(phone);

    phone = new Phone("S586","Sony", " €570.00 ", " Xperia Z1", "Smartphone ", " Black");
    phoneList.add(phone);

    phone = new Phone("S549","Sony", " €260.00 ", " Xperia SP", "Smartphone ", " Black");
    phoneList.add(phone);

    phone = new Phone("G359","Samsung", " €530.00 ", "Galaxy S4", "Smartphone ", " Black");
    phoneList.add(phone);

    phone = new Phone("G375","Samsung", " €530.00 ", "Galaxy S4", "Smartphone ", "White");
    phoneList.add(phone);

    phone = new Phone("G352","Samsung", "  €350.00 ", "Galaxy S4 Mini", "Smartphone ", "White");
    phoneList.add(phone);

    phone = new Phone("H488"," HTC ", " €529.00 ", "One", "Smartphone ", "Black");
    phoneList.add(phone);

    phone = new Phone("H463"," HTC ", " €419.00 ", "One Mini ", "Smartphone ", "Silver");
    phoneList.add(phone);

}

Answer 1

在你的构造函数中

public Phone (String itemsId,  String brand, double price, String name, String type, String colour ) 

price 是一个 double ，但您传递一个字符串，例如“419.00欧元”

您必须传递价格，例如419.0(没有欧元符号，没有空格，周围没有双引号)。

Phone phone = new Phone("A223","Apple", 679.0, "iPhone 5s", "Smartphone ", " Black");
phoneList.add(phone);